Issue invoices to clients (exhibitors/sponsors/vendors) according to event contracts. Monitor and follow up on outstanding payments. Maintain accurate AR records and ensure timely updates in the system. Coordinate with the sales and event teams to resolve billing discrepancies. Prepare regular AR aging reports and collection status updates. Assist with bank reconciliations related to incoming payments. Support onsite registration/payment processes during event days, if required. Ensure proper documentation of all receivables in accordance with company policy and audit requirements.